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B. W. APPLEGARTH. INLET COCK FOR WATER UOIL BOILERS.

No. 421,224. Patented Feb.l1,1890.

UNITED STATEs PATENT FFICE.

RUFUS IV. APPLEGARTH, OF BALTIMORE, MARYLAND.

INLET-COCK FOR WATER COIL BOILERS.

SPECIFICATION forming part of Letters Patent No. 421,224, dated February11, 1890.

Application filed November 2, 1889- Serial No. 329,020. (No model.)

To all whom it may concern:

Be it known that I, RUFUS W. APPLE- GARTH, a citizen of the UnitedStates, residing at Baltimore, in the State of Maryland, have inventednew and useful Improvements in Inlet-Cocks for \Vater Coil Boilers, ofwhich the following is a specification.

It is the object of my invention to provide a Water coil boiler with aninlet-eock of such construction that the quantity of water admitted tothe steam-generating coil can be readily controlled from time to time asrequired, and so that while the heated coil is in use for generatingsteam it will receive only the small volume or stream. of waternecessary for that purpose.

To this end my invention consists in the combination, with a water coilboiler, of an inlet-cock provided with a valve-plug having two passagesof different capacity, one for a large stream of water when it isdesired to flood the coil to obtain hot water, and the other for a smallstream or spray when the heated coil is to be used for generating steam.

In the annexed drawings, illustrating the invention, Figure 1 is asectional view of my improved inlet-cock for Water coil boilers. Fig. 2is a View of the several parts of the cock detached. Fig. 3 is a view ofa water coil boiler with my improved inlet-cock applied.

Referring to the drawings, the numeral 1 designates the watei heatingand steam-gencrating coil of a water coil boiler, adapted as a portablesteam-generator and water-heater for bath-tubs, vapowbaths, and otherpurposes.

In the inlet-pipe 2 of the coil 1 is inserted a valve-casing 3, havinginlet-port l and outlet port 5, preferably in line with each other, asshown. The valve-plug 6 is in the form of an ordinary taperingturn-plug, and is pro vided at one end with a handle 7, as usual. Thisvalve-plug 6 is provided with a large transverse passage 8, adapted todeliver the full quantity of Water that can enter the inlet-port of thevalve-casing. The valve-plug 6 is also provided with a small transversepassage 9, that intersects the large passage 8 diagonally. Thevalve-plug 6 is secured in place by a washer 10 and a set-screw 11 atits lower end.

On the upper part of the valve-casing 3 is a stop 12, in line with theports 1 and 5, and

a stop 1.3, that is located diagonally to one side of the valve-casingtop. 011 the Valveplug 6, between the stops 12 and 13, is a stud orprojection 141, adapted to be brought 1n contact with either of saidstops when the plug is turned to open the passage 8 or 9, as the casemay be.

By turning the valve-plug 6 until the stud 1% comes in contact with thestop 12 the large plug-passage 8 will be brought in line w th the inletand outlet ports of the valve-casing 3, and the coil 1 will thus receivea large volume of water. Vhen the coil 1 is to be used for heatingwater, the valve-plug 6 Wlll be turned to the position just described.

In using the coil 1 for generating steam it is desirable to supply theheated coil with only a small stream or volume of water, and this can bereadily done by turning the valveplug 6 until the stud 14 comes incontact with the stop 13, thereby closing the'large passage 8, andbringing the small plug-passage 9 111 line with the inlet and outletports of the valve-casing.

If it is desired to cut off the supply of water entirely, the valve-plugwill be turned sufficiently to bring the stud 14 about midway betweenthe stops 12 and 13, and as the plug-passages 8 and 0 intersect eachother diagonally they will both be thus carried out of line with thevalve-casing ports, and no water will pass through the cock.

The stops 12 and 13 can be marked Hot water and Steam, respectively, anda suitable mark or index can also be provided to indicate the positionof the stud 14 when the supply of water is to be entirely out cit.

By means of this inletcook the proper supply of water to the coil 1,either for generating steam or for providing hot water only, can bereadily controlled without requiring any skill on the part of theoperator.

IVhat I claim is In a water coil boiler, the combination, with thewater-heatin g and steam-generating coil, of a water-inlct cock providedwith a valve-plug having large and small intersect ing passages,substantially as described.

In testimony whereof I have affixed my signature in presence of twoWitnesses.

RUFUS WV. APPLEGAlPtTI-I. 'Witncsses JAMES L. NoRRIs,

J AMES A. RUTHERFORD.

